JPS56141359A - Preparation of dye - Google Patents

Preparation of dye

Info

Publication number
JPS56141359A
JPS56141359A JP4634280A JP4634280A JPS56141359A JP S56141359 A JPS56141359 A JP S56141359A JP 4634280 A JP4634280 A JP 4634280A JP 4634280 A JP4634280 A JP 4634280A JP S56141359 A JPS56141359 A JP S56141359A
Authority
JP
Japan
Prior art keywords
dye
sulfuric acid
organic solvent
formula
containing compound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4634280A
Other languages
Japanese (ja)
Other versions
JPS6036181B2 (en
Inventor
Yasuo Tezuka
Taira Fujita
Shinji Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP4634280A priority Critical patent/JPS6036181B2/en
Publication of JPS56141359A publication Critical patent/JPS56141359A/en
Publication of JPS6036181B2 publication Critical patent/JPS6036181B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: In esterifying a β-hydroxyethylsulfonyl group-containing compound by reacting it with sulfuric acid, to control the concentration of sulfuric acid in a system to a theoretical value and to obtain high-purity dye, by distilling away existing water through an azeotropic mixture with an organic solvent.
CONSTITUTION: A β-hydroxyethylsulfonyl group-containing compound [preferably a compound shown by the formula II [A is (substituted) phenylene or naphthylene]] shown by the formula I (D is residue of organic dye molecule; n is 1W4) is suspended in an organic solvent, e.g., orthodichlorobenzene, etc. and esterified with sulfuric acid. Simultaneously formed water is distilled away out of the system through azeotropic mixture with an organic solvent, to give a reaction dye having a β-sulfate ethyl sulfonyl group shown by the formula III.
EFFECT: Small waste water contamination.
COPYRIGHT: (C)1981,JPO&Japio
JP4634280A 1980-04-08 1980-04-08 Dye manufacturing method Expired JPS6036181B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4634280A JPS6036181B2 (en) 1980-04-08 1980-04-08 Dye manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4634280A JPS6036181B2 (en) 1980-04-08 1980-04-08 Dye manufacturing method

Publications (2)

Publication Number Publication Date
JPS56141359A true JPS56141359A (en) 1981-11-05
JPS6036181B2 JPS6036181B2 (en) 1985-08-19

Family

ID=12744457

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4634280A Expired JPS6036181B2 (en) 1980-04-08 1980-04-08 Dye manufacturing method

Country Status (1)

Country Link
JP (1) JPS6036181B2 (en)

Also Published As

Publication number Publication date
JPS6036181B2 (en) 1985-08-19

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